remove alpha channel of png images so that we don't have a black background
remove alpha channel of png images so that we don't have a black background

openfoodfacts/openfoodfacts-server,openfoodfacts/openfoodfacts-server,openfoodfacts/openfoodfacts-server,openfoodfacts/openfoodfacts-server,openfoodfacts/openfoodfacts-server